CN0-201 Online Practice Questions and Answers

Which of the following parameters are generally used to describe quality of service for IP-based voice and video? Each correct answer represents a complete solution. Choose all that apply.

A. Jitter

B. Bandwidth

C. Latency

D. Packet loss

Which of the following is a set of networking protocols that permits networked devices to seamlessly discover each others presence on the network?

A. XPnP

B. STUN

C. UPnP

D. CoS

Which of the following network configuration utilities is used to display information about current TCP/IP connections?

A. ping

B. netstat

C. nbtstat

D. nslookup

Which of the following layers of the OSI model provides error control in a network?

A. Network layer

B. Application layer

C. Transport layer

D. Physical layer

Which of the following codecs is often considered as the default codec for H.323?

A. G.724

B. G.722

C. G.711

D. G.726

Which of the following statements are true about spoofing and session hijacking? Each correct answer represents a complete solution. Choose all that apply.

A. Session hijacking is an attack in which an attacker takes over the session, and the valid user's session is not disconnected.

B. Session hijacking is an attack in which an attacker takes over the session, and the valid user's session is disconnected.

C. Spoofing is an attack in which an attacker can spoof the IP address or other identity of the target and the valid user cannot be active.

D. Spoofing is an attack in which an attacker can spoof the IP address or other identity of the target but the valid user can be active.

You have been hired by Future Perfect Inc. to configure its TCP/IP-based network. The company has three branch offices at different locations. You decide to use private IP addressing.

Which of the following are the characteristics of private IP addressing? Each correct answer represents a complete solution. Choose all that apply.

A. Private IP addresses can be assigned by many organizations at a time without conflict.

B. Private IP addresses are provided by an Internet Service Provider.

C. Private IP addresses are used to create a network for home users only.

D. NAT allows users to share a single public IP address with private IP addresses.

For outside cabling, which of the following cable types is most immune to the effects of lightning?

A. Unshielded Twisted Pair (UTP)

B. Shielded Twisted Pair (STP)

C. Coaxial

D. Fiber optic

Which of the following T.120 recommendations includes multipoint communication service?

A. T.122

B. T.121

C. T.123

D. T.124

Which of the following statements correctly describes T.120?

A. T.120 is an international standard for data conferencing.

B. T.120 is an international standard for video conferencing.

C. T.120 is an international standard for instant messaging.

D. T.120 is an international standard for audio conferencing.